JP2008105032A - Wire solder feeding mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wire solder feeding mechanism having a meandering roller for meandering a solder between a bobbin and a feed means, wherein the wire solder is easily allowed to be set. <P>SOLUTION: The wire solder feeding mechanism comprises a feed means 2 which pulls a wire solder 1 wound around a bobbin 3 and feeds the wire solder to a soldering section through a cylindrical passage, and a meandering roller 10 for meandering the wire solder 1 which is pulled out of the bobbin 3 and reaches the feed means. The meandering roller 10 is divided in a first roller group 11 and a second roller group 12. The first and second roller groups 11, 12 are movable between a closed condition in which the groups get near each other to hold and press the wire solder 1 from both sides so as to be meandered, and an opened condition in which the groups are separated from each other to keep a space not in contact with the wire solder 1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a delivery mechanism for pulling out linear solder wound around a bobbin and transporting it to a soldering site in an automatic soldering apparatus.

  In the automatic soldering device, the linear solder is pulled out from the bobbin where the linear solder is wound by a feeding means such as a roller, and sent out to the soldering site near the tip through the cylindrical passage. Has a solder delivery mechanism. In this delivery mechanism, Patent Document 1 discloses an example in which a meandering roller for eliminating the waviness (cracking) of linear solder drawn from a bobbin is disclosed. Since the wire solder is wound around the bobbin, the wire solder is wrinkled. Therefore, the wire solder immediately after being pulled out from the bobbin is undulated. Therefore, it is a mechanism for eliminating waviness and waviness by meandering with a meandering roller. If the undulation is not eliminated, it will cause clogging when passing through the cylindrical passage.

The delivery mechanism of Patent Document 1 includes a roller-type tension device (3) which is a feeding means for drawing linear solder from a bobbin (2) and feeding it through a tube (5) in a cylindrical passage, and the bobbin. A large number of wheel-like members (6) are installed as meandering rollers that meander the linear solder until the linear solder drawn from the wire reaches the feeding means to eliminate the waviness.
JP-A-10-58138

  When the meandering roller is provided in the linear solder delivery mechanism, the trouble of attaching the bobbin and feeding the linear solder to the delivery mechanism becomes a problem. That is, in the mechanism as in Patent Document 1, it is necessary to manually pull out the tip of the linear solder from the bobbin and draw it between the meandering rollers to the feeding means.

  Since many bobbins are set in an automatic soldering machine installed on a soldering line with a large number of soldering tips, it is not a good idea to take a lot of time for soldering by replacing the bobbin, and there is room for improvement. It is left.

  The present invention is based on such a technical background, and proposes a linear solder feeding mechanism that can easily set linear solder from a bobbin to a feeding means.

  The linear solder delivery mechanism according to the present invention includes a feeding means for pulling out linear solder wound around a bobbin and feeding it to a soldering site through a cylindrical passage, and until it reaches the feeding means after being drawn out from the bobbin. A meandering roller for meandering the linear solder, and the meandering roller is divided into a first roller group and a second roller group. The two roller groups are movable between a closed state in which the linear solder is sandwiched and pressed from both sides and pressed to meander, and an open state in which the rollers are separated from each other and maintain an interval that does not contact the linear solder. It is characterized by that.

  According to the linear solder feeding mechanism of the present invention, when the linear solder picked up from the bobbin is set to the feeding means, the first and second roller groups are separated from each other, and the interval not contacting the linear solder is set. Since the open state can be maintained, the linear solder can be guided to the feeding means by passing straight between the first and second roller groups in the open state, and can be set easily. It becomes possible.

  1 to 4 show and describe an embodiment of a linear solder delivery mechanism according to the present invention. Each figure extracts and shows the part related to the linear solder delivery mechanism in the automatic soldering apparatus.

  In the linear solder feeding mechanism of the present embodiment, a feeding unit that performs step feeding operation by a roller type as in Patent Document 1, for example, is provided in a feeding box 2 that feeds an appropriate amount of the linear solder 1 to a soldering site. ing. The linear solder 1 drawn out from the bobbin 3 through the funnel hole 4 reaches the feeding means in the feeding box 2 through the feeding cylinder 5, and is pulled out by the step operation of the feeding means. At the same time, it is sent out to the soldering site through a cylindrical passage such as a resin tube by the operation of the feeding means.

  A meandering roller 10 for meandering the linear solder 1 is provided between the bobbin 3 and the feeding cylinder 5 of the feeding box 2. The meandering roller 10 of the present embodiment is divided into a first roller group 11 and a second roller group 12, and these first and second roller groups 11, 12 are fed from the funnel hole 4 to the feed cylinder 5. It is arranged on both sides of the solder path leading to.

  The first and second roller groups 11 and 12 are attached to the first and second slide blocks 13 and 14, respectively. Two driven rollers 15 are attached to the first slide block 13 as the first roller group 11, and two driven rollers 15 are attached to the second slide block 14 as the second roller group 12. Each of these two driven rollers 15 is substantially parallel to the drawing direction of the linear solder 1 (the solder path from the funnel hole 4 to the feed tube 5) in each of the first and second slide blocks 13, 14. The positions are staggered so that the driven roller 15 of the second roller group 12 is positioned between the driven roller 15 and the driven roller 15 in the first roller group 11.

  With this roller arrangement, when the first roller group 11 and the second roller group 12 are closed, the linear shape is sandwiched and pressed between the first and second roller groups 11 and 12 from both sides. The solder 1 is meandered, and the solder 1 is squeezed by being pulled out while meandering, and the waviness is eliminated.

  The first and second slide blocks 13, 14 to which the first and second roller groups 11, 12 are attached are two parallel lines extending in a direction substantially perpendicular to the drawing direction of the linear solder 1. Slide along the rails 16 and 17. In the present embodiment, since the pull-out direction is the vertical direction, the rails 16 and 17 are extended in the horizontal direction. As shown in FIG. 2, the first and second slide blocks 13, 14 are provided with slide pieces 18 projecting from the back surfaces of both ends, and the through holes 19 opened in the slide pieces 18 are provided as rails 16, 17 penetrates. Accordingly, the first and second slide blocks 13 and 14 passed through the rails 16 and 17 slide in the lateral direction, and approach and separate from each other. Accordingly, the first and second roller groups 11 and 12 are movable between a closed state (FIGS. 1 and 4) and an open state (FIG. 3).

  In each of the first and second slide blocks 13 and 14, screws 20 are respectively screwed into both ends, and the spring 21 is bridged between the slide blocks 13 and 14 using the screws 20 as locking members. Has been passed. The two are attracted by the spring 21 spanned between them, so that the first and second slide blocks 13 and 14 close to each other, that is, the first and second roller groups 11 and 12 are closed. It is biased in the direction.

  Further, a cam 22 that slides the first and second slide blocks 13 and 14 away from each other against the biasing force of the spring 21 is pivotally supported on the back surface of the first slide block 13. The shaft 23 of the cam 22 passes through the first slide block 13 and is fixed to the operation knob 24 on the front side. Therefore, the cam 22 can be rotated by turning the operation knob 24. A cam follower (follower) wall 25 (FIG. 2) that abuts the cam 22 is provided on the back surface of the second slide block 14 of the other party so as to follow the rotation of the eccentric cam 22. Therefore, by rotating the cam 22, the first and second slide blocks 13, 14 are separated from each other against the bias and slide so as to be close to each other according to the track of the cam 22. Accordingly, the first and second roller groups 11 and 12 can move between a closed state and an open state.

  Such a cam 22 is restricted so as to be able to rotate by 180 ° between a position where the distance between the first and second slide blocks 13, 14 is minimized (including none) and a position where the distance is maximized. The predetermined rotational position (angle) can be held by an appropriate method, such as the case where the minimum position and the maximum position are held by predetermined locking means.

  Further, the second slide block 14 is provided with a bolt 26 that passes through the block 14 in a direction parallel to the rails 16 and 17 and a nut 27 for retaining the bolt. When the bolt 26 penetrates the second slide block 14 and the tip abuts against the first slide block 13, the first slide block 13 and the second slide block 14 in the closed state are closed. The gap can be finely adjusted. That is, when the bolt 26 is turned to adjust the tip protrusion amount from the second slide block 14 and the nut 27 is tightened to keep the adjustment position, the linear shape by the first and second roller groups 11 and 12 is maintained. The meandering width of the solder 1 is adjusted, and the solder 1 can be adjusted to an optimum state to eliminate the waviness.

  The setting method of the linear solder 1 will be described. First, the operation knob 24 is rotated to rotate the cam 22 to slide the first and second slide blocks 13 and 14 away from each other against the biasing force. The cam 22 is stopped when the distance between the two is the maximum. As a result, the first and second roller groups 11 and 12 are maintained in an open state (FIG. 3) in which the first and second roller groups 11 and 12 are separated from each other and maintain an interval that does not contact the linear solder 1. In this open state, the linear solder 1 picked up from the bobbin 3 is passed through the funnel hole 4, and is passed straight between the first and second roller groups 11, 12 in the open state and passed through the feed cylinder 5, Grip the feeding means.

  After passing the linear solder 1 to the feeding means, the operation knob 24 is rotated to rotate the cam 22, and the first and second slide blocks 13, 14 are slid to approach each other according to the biasing force, and between them. Is stopped at a minimum interval (including contact). As a result, the first and second roller groups 11 and 12 come close to each other and are in a closed state (FIG. 4) in which the linear solder 1 is sandwiched and pressed from both sides to meander. Accordingly, the subsequent linear solder 1 is meandered while being meandered according to the feeding of the feeding means, and is sent out while eliminating the undulations caused by the winding wrinkles on the bobbin 3.

The front view which shows the linear solder delivery mechanism which concerns on this invention. The side view which shows the linear solder delivery mechanism which concerns on this invention. The figure explaining the open state of the linear solder sending mechanism which concerns on this invention. The figure explaining the closed state of the linear solder delivery mechanism which concerns on this invention.

Explanation of symbols

10 meandering roller 11 first roller group 12 second roller group 13 first slide block 14 second slide block 15 driven roller 16, 17 rail 18 slide piece 19 through hole 20 screw 21 spring 22 cam 23 shaft 24 operation Knob 25 Cam follower 26 Bolt 27 Nut

Claims (3)

A feeding means for pulling out the linear solder wound around the bobbin and sending it to the soldering site through the cylindrical passage;
A meandering roller for meandering linear solder from the bobbin until it reaches the feeding means;
Comprising
The meandering roller is arranged divided into a first roller group and a second roller group,
The first and second roller groups move between a closed state in which the linear solder is sandwiched from both sides and pressed to meander, and an open state in which the first and second roller groups are separated from each other and maintain an interval that does not contact the linear solder. A linear solder delivery mechanism characterized by being enabled. The first and second roller groups are attached to the first and second slide blocks, respectively.
The first and second slide blocks slide along a rail extending in a direction substantially perpendicular to the direction of drawing out the linear solder, whereby the first and second roller groups are in the closed state. The linear solder delivery mechanism according to claim 1, wherein the linear solder delivery mechanism is movable to the open state. The first and second slide blocks are urged in a direction to bring the first and second roller groups into the closed state, and the first and second slide blocks are opposed to the urging. There is a cam that slides each other,
The linear solder feed mechanism according to claim 2, wherein the first and second roller groups can be moved between the closed state and the open state by rotating the cam. .

Images